Heuchera, Alum Root, Alumroot, Coral Bells, Coralbells 'Obsidian'

Heuchera

Family
Saxifragaceae (saks-ih-frag-AY-see-ee)
Genus
Heuchera (HEW-ker-a)
Synonym
Spacing
12-18 in. (30-45 cm)
Hardiness
12-15 in. (30-38 cm)
Sun Exposure
USDA Zone 4a: to -34.4 °C (-30 °F)
USDA Zone 4b: to -31.6 °C (-25 °F)
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)
USDA Zone 11: above 4.5 °C (40 °F)
Bloom Color
Sun to Partial Shade
Bloom Time
Foliage
White/Near White
Other Details
Other details
Late Spring/Early Summer
Propagation Methods
Herbaceous
Textured
Seed Collecting
Category
By dividing the rootball
Soil pH requirements
Patent Information
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed
Foliage Color
Bloom Characteristics
Water Requirements
Where to Grow
Perennials
Regional

This plant is said to grow outdoors in the following regions:

Kenai, Alaska

Denver, Colorado

Farmington, Connecticut

Old Lyme, Connecticut

Waterbury, Connecticut

Cordele, Georgia

Chicago, Illinois

Mount Prospect, Illinois

Plainfield, Illinois

Washington, Illinois

Russell, Kentucky

Haydenville, Massachusetts

Norton, Massachusetts

Plainwell, Michigan

Silver Lake, Minnesota

Litchfield, New Hampshire

Cape May Court House, New Jersey

Averill Park, New York

Southold, New York

Boone, North Carolina

Durham, North Carolina

Pekin, North Dakota

Cincinnati, Ohio

Coshocton, Ohio

Ravenna, Ohio

Enid, Oklahoma

Portland, Oregon

Norristown, Pennsylvania

Philadelphia, Pennsylvania

Conway, South Carolina

Memphis, Tennessee

Aledo, Texas

South Jordan, Utah

Montpelier, Vermont

Alexandria, Virginia

Arlington, Washington

Arlington Heights, Washington

Bellevue, Washington(2 reports)

Kalama, Washington

Kirkland, Washington

Oso, Washington

Smokey Point, Washington

Vancouver, Washington

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Gardener's Notes:

8
positives
0
neutral
0
negative
Sort By:
Sort By:
I
I
Bellevue, WA (Zone 8a) | May 2013 | positive

This is the best performer of all the Heucheras I have. Stays evergreen in winter and looks like a small shrub in summer (5-10 times larg...Read More

D
D
Arlington, VA | April 2011 | positive

Incredible plant. I took a chance and put it in container on an east facing wall, and mostly no chance of getting other watering than ra...Read More

W
Chicago, IL (Zone 5b) | October 2006 | positive

This heuchera has performed very well for me, in a number of spots with differing conditions. Holds its dark foliage color from spring till frost.

P
P
(Arlene) Southold, NY (Zone 7a) | June 2006 | positive

Love the depth of color! Well behaved in partial shade.

F
F
| July 2005 | positive

My three plants are in their second year. They have done well despite dry summers and cold (-30) winters in Ontario. This year the leav...Read More

K
K
Ottawa, ON (Zone 4a) | June 2005 | positive

It has survived a tough Ottawa (Canada's capital) winter, i.e. zone 4a. It thrives again this spring. The foliage has a bit of green this...Read More

E
E
esw
Haydenville, MA (Zone 5a) | November 2004 | positive

Started out in my garden in a mostly sunny area and didn't like it. When moved to a morning, early afternoon sun and afternoon shade it p...Read More

K
Elgin, IL (Zone 5a) | October 2004 | positive

Very nice foilage.

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